Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 129, NWS Sioux Falls, SD

July 16, 2016Brookings County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 16, 2016, 11:42 PM CDT for Brookings County, South Dakota. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 16, 2016, 11:42 PM CDT (04:42 UTC)
Expired: Jul 17, 2016, 12:16 AM CDT
In force: 34 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Brookings County, SD

The radar

The Sioux Falls radar (KFSD), 96 km from the middle of the area, began a volume at 04:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 16, 6:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 4.7 hours before the alert went out and 148 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 687 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 1298 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 295 m²/s²
0-3 km storm-relative helicity: 515 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

047 
WUUS53 KFSD 170442
SVRFSD
SDC011-170530-
/O.NEW.KFSD.SV.W.0129.160717T0442Z-160717T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1142 PM CDT SAT JUL 16 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA...

* UNTIL 1230 AM CDT

* AT 1142 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BRUCE...OR
  9 MILES SOUTH OF ESTELLINE...MOVING EAST AT 25 MPH.

  HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
           ROOFS...AND OUTBUILDINGS. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  WHITE AROUND 1205 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4438 9645 4442 9693 4454 9692 4454 9645
TIME...MOT...LOC 0442Z 271DEG 22KT 4445 9684 

HAIL...1.00IN
WIND...70MPH
 
$$

HANKO

2 follow-up statements

418 
WWUS53 KFSD 170502
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1202 AM CDT SUN JUL 17 2016

SDC011-170530-
/O.CON.KFSD.SV.W.0129.000000T0000Z-160717T0530Z/
BROOKINGS SD-
1202 AM CDT SUN JUL 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR NORTHEASTERN BROOKINGS COUNTY...

AT 1202 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER WHITE...OR 11
MILES NORTHEAST OF BROOKINGS...MOVING EAST AT 25 MPH.

HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
         TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
         ROOFS...AND OUTBUILDINGS. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN BROOKINGS COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4438 9645 4441 9679 4453 9678 4454 9645
TIME...MOT...LOC 0502Z 271DEG 22KT 4445 9667 

HAIL...1.00IN
WIND...70MPH
 
$$

HANKO

237 
WWUS53 KFSD 170516
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1216 AM CDT SUN JUL 17 2016

SDC011-170526-
/O.CAN.KFSD.SV.W.0129.000000T0000Z-160717T0530Z/
BROOKINGS SD-
1216 AM CDT SUN JUL 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BROOKINGS COUNTY
IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE...THE WARNING HAS BEEN CANCELLED. HOWEVER GUSTY WINDS AND
HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHWESTERN MINNESOTA...AND EAST CENTRAL SOUTH DAKOTA.

LAT...LON 4438 9645 4441 9679 4453 9678 4454 9645
TIME...MOT...LOC 0513Z 271DEG 22KT 4445 9655 

$$

HANKO

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 16, 9:20 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	40 min
Jul 16, 9:45 PM CDT	Flash Flood Watch	FSD	Brookings	6 hr
Jul 16, 9:50 PM CDT	Tornado Warning	FSD	Brookings, Kingsbury	40 min
Jul 16, 10:17 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	43 min
Jul 16, 10:22 PM CDT	Tornado Warning	FSD	Brookings	38 min
Jul 16, 10:50 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	40 min
Jul 16, 10:58 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Gregory	32 min
Jul 16, 11:06 PM CDT	Tornado Warning	FSD	Brookings	24 min
Jul 16, 11:18 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson, Turner, Yankton	27 min
Jul 16, 11:34 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Turner	26 min
Jul 16, 11:35 PM CDT	Flash Flood Warning	FSD	Brookings	6 hr
Jul 16, 11:45 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Clay, Hutchinson, Lincoln, Turner and 2 more	30 min
Jul 17, 12:00 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, McCook, Minnehaha, Turner	45 min
Jul 17, 12:14 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union, Yankton	31 min
Jul 17, 12:37 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	23 min
Jul 17, 12:41 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln	34 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2016 Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.